摘要
针对城轨供电系统接触网结构和运行特点,建立了城轨供电系统接触网可靠性的故障树分析模型,计算接触网可靠性指标。分析了影响接触网可靠性的主要故障原因,通过求取接触网故障树的最小割集得出影响系统可靠度的直接原因,并进行底事件故障重要度分析。接触网电气失效的影响因子排在前几位的底事件分别是定位线夹松动和断裂,以及软定位器锈蚀等定位装置失效。有针对性地提出了改进接触网可靠性的措施——特别加强对接触网定位装置的巡查。
According to the structure and operation characteristics of the power supply in urban mass transit,the fault tree analysis(FTA) model of the reliability of power supply catenary in urban mass transit is built.Reliability indexes of catenary are calculated,the main reasons which directly impact on catenary are analyzed.Measurements are proposed to improve the reliability of the catenary by analyzing the sensibility of some fault events.Finally,a practical method is raised for the reliability analysis and fault forecasting of the catenary.
出处
《城市轨道交通研究》
北大核心
2009年第9期38-42,共5页
Urban Mass Transit
作者简介
丁坚勇,教授,武汉大学电气工程学院,430072,武汉
